HotTop Roasters Details Page

The HotTop Roaster is for those who want larger batches than the air roasters, longer roasts, a commercial type roast-and-cool cycle, and a more robust machine.

Roasting with the HotTop takes an extra effort: you need to understand the sights, sounds and smells of the coffee roasting process to get the best results. But this method, roasting with your senses, is rewarded in a machine that gives a close-up view of the coffee during the roast cycle, and … well … produces so much roast aroma (read this as smoke!)

Yep, if you roast more coffee you are going to get more smoke. There’s no way around it. With the HotTop, you are going to need ventilation to the outdoors, ideally by installing it under a kitchen vent hood.

The roast profile reproduces the results of shop drum roaster more than the small home air roasters. This especially suits folks who roast for espresso extraction, but in cupping the HotTops lighter roasts, I am impressed with the aromas and delicate balance of the cup quality.

The HotTop is now available with two different control panel configurations but everything else on the roaster is the same (the two pictures below are at slightly different angles). The difference in the control panels is explained below.

From our experience, the real strength of the HotTop machines continues to be the fundamental design, which allows the beans to exit the drum to cool. Other drum roasters available require you either to keep the beans in the hot drum for the cooling cycle, or you can juggle a hot roasting chamber. HotTop USA has great support on the machine through Michael Chiang – he knows the machine backwards and forwards. He is able to troubleshoot problems with customers and send replacement parts either under warranty or sell them so you can keep an older machine working. Machines come with a one-year manufacturer’s warranty.

The Latest information on the HotTop roasters is available on our main webcart site at HOTTOP-  SWEETMARIAS.COM

Two HotTop Models are available:

HotTop Basic Coffee Roaster and the HotTop Programmable Coffee Roaster 

HotTop Basic Coffee Roaster


The HotTop Basic Model KN-8828B 2K and  to the right the 2K+

The new HotTop Basic is the latest model and features the following improvements over either of the earlier analog or digital models.
– Color LCD display
– Built-in line voltage control, no variac needed
– Built-in temperature safety features. User must press any key to continue roasting if darker roast needed when Hottop temperature display 415 F, otherwise Hottop will dump the beans and shut off the machine automatically.
– 15 – 17 minutes for a 250 grams (i.e. 9 oz or 1/2 lb) batch
– Target time, target temperature, fan speed, or heater power can be changed during roast
– Adjusted profile can be saved and played back
– Capacity: 225g – 300g per roasting (250g optimal)

2K Plus model has 2 thermocouples and more control options on the front panel.


HotTop Programmable Coffee Roaster 

Hot Top Digital Programmable RoasterP1

The HotTop Programmable model KN-8828P

The Hot Top Programmable model is built on the very solid foundation of the Basic machine – with an even more dynamic user interface; the programmable model allows the user to create a “roast profile” – that is there are 8 stages to the roast for which you can set time, temperature and fan speed. Up to 9 programmed roast profiles can be saved and recalled.

The machine has an Auto mode – so you do not need to program it. The LCD display gives you feedback on the roast at every point – so you can see where you are in the process. Programming the roast profile seems to be the “holy grail” for home roasters – because it gives you better control over the process.

The HotTop in Detail … Features and Function

Below are some details to help you decide if the HotTop is right for you. Further notes and tips are on this tip sheet page. The Hottop comes with a one year manufacturer’s warranty. Some of the images below are from older models, but most of the information is pertinent since the chassis has changed little (the user control panel has changed significantly). Below this section we offer the HotTop Parts and Accessories.

Hot Top Coffee Roaster Hot Top Coffee Roaster - front view-green coffee Hot Top Coffee Roaster - Control Panel Hot Top Coffee Roaster 8828P panel Hot Top Coffee Roaster Hot Top Coffee Roaster top view of Vent 250 gram batch on scale Hot Top Coffee Roaster Rear Exhaust Hot Top Coffee Roaster Top View Hot Top Coffee Roaster Filter Hot Top Coffee Roaster Diagram 2 Hot Top Coffee Roaster Diagram 1 Hot Top Coffee Roaster Control Panel Roast batches from Hot Top Coffee Roaster Side View Hot Top Coffee Roaster Hot Top Coffee Roaster Roast Curve Chart Parts for Hot Top Coffee Roaster Hot Top Coffee Roaster View Funnel Hot Top Coffee Roaster Filter Hot Top Coffee Roaster Hot Top Coffee Roaster Drum Light and dark roasts Hot Top Coffee Roaster Upper filter Hot Top Coffee Roaster Control Panel Hot Top Coffee Roaster  Hot Top Coffee Roaster Panel